Molder&#39;s flask.



No. 893,252. 1 I PATBNTED JULY 14.1908.

I l G. H. KRAMER.

MOLDER'S PLASK.

APPLICATION FILED .IAN.9. 1908.

CIV

UNITED sTATEs PATENT oEErcE.

GEORGE H. KRAMER, OF DAYTON, OHIO.

MoLDERs FLASK.

Specification of Letters Patent.

Patented July 14, 1908.

Application filed January 29, 1908. Serial No. 413,258.

To all whom it may concern:

Be it known that I, GEORGE H.KRAMER, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Molders Flasks; and I dodeclare the following to be a full, clear,

. and exact description of the invention, such wood flask, the same isalso reinforced and4 made stronger, and thus enables the flask to belighter by using less wood in its construction; or in other words, theside and end panels of the flask may be reduced in thickness withoutendangering the same to warpage.

Preceding a detail description of the invention, reference is made tothe accompanying drawings, of which- Figure l, is a perspective view ofa molders flask with parts appearing in section. Fig. 2, is a crosssectional view of one side of the flask, `in a vertical plane, andshowing a slight modification in the construction of the essentialfeatures of the invention.

In a detail description of the invention, similar reference charactersindicate corresponding parts. y

l and 2 designate respectively, the upper and lower portions oftheflask, otherwise termed the cope and drag portions of said flask, whichrest upon a base board or pallet 3. The mold is formed in the usualmanner by cope and drag sand 4' and 5 the above briefly describes anordinary form of twopart flask, which parts are united in the usualmanner by dowel pins or otherwise, such as clamps, etc. Secured to theadjacent edges of the two parts 1 and 2 of the flask, are metallicframes; the metallic frame for the upper or cope portion of the flask isof a construction to provide two flanges 6 and 7 which embrace. theinner vertical sides and the lower horizontal edges of said upperportion of the flask, to which portion said metallic frame is rig1dlysecured by means of counter-sunk screws l0 which, penetrate openings inthe flange portion 7 and extend into the sides and ends of the flaskperpendioularly. The said metallic frame so united to the upper portionof the flask has an inwardly-extending flange portion 8 substantiallyina plane with the outwardly-extending flange portion 7, and fromtheflower side of said inwardly-extending flange 8 there is adownwardly-projected rib or bead 9 which may be semi-circular in crosssection or it may be pointed as shown in the drawings. The metallicframe for the lower or drag portion of the flask is likewise providedwith an outwardly-extending flange portion 7 and a downwardly-extendingflange portion 6', which parts of flanges engage the upper horizontaledges of the drag portion of the flask and the inner vertical sidessimilar to the metallic frame of the upper portion of the flask. Thislower frame is secured to the lower or drag portion of the flask bycountersunk screws 1() similar to the manner of securing the uppermetallic frame.

The lower metallic frame is minus the inwardly-extended horizontalflange 8 and the downwardly-projected bead 9 which are features of theupper metallic frame, but said lower metallic frame has an upwardlyextended flange 11 which the upper metallic frame does not possess. Thlsupwardlyextending flange 11 on the lower portion of the flask engagesthe metallic frame on the upper portion of the flask substantially in ap ane with the perpendicular flange '6 4on said upper meta lic frame.The cope and drag sand 4 and 5 inclose on both sides theinwardly-extended 'flange 8 of the upper metallic framefand it will beobserved the bead or rib 9 is embedded in the drag sand 5 and will thusact as a barrier to any outrun of the molten metal that might bedisposed to run out `of the mold between the adjacent faces of the sand.The molten vmetal is thus prevented by this downwardlyprojected bead orrib 9 from running out and into contact with the sides or ends of thetwo parts of the flask at the only points where such metal is liable toescape from the mold. As before intimated, the cross sectional shape ofthe bead or rib 9 may vary from the pointed shape shown in the drawings,without interfering with the functior of said bead or rib, which, is asbefore stated, to interce t any out-run of the molten metal from t emold. The upwardly-extended flange 1l of the lower metallic frameenables a proper fitting of the two parts of the flask at all times,especially when wear by constant usage, tends to cause an unevenness inthe fit of the two parts of the flask. These upper and lower metallicframes are provided with a suitable number of apertured ears 12 for theinsertion of a similar number of dowel pins 13 by means of which the twoparts of the flask are secured together. The modified construction shownin F ig. 2, is substantially the same as that shown in Fig. l, the onlydifference being in the omission of the upwardly-extending flange 11 onthe lower metallic frame. In this modified construction, the horizontalportions 7 of the angle irons engage each other directly, owing to theomission of the upwardlyextending flange 11 on the lower frame. Theinner perpendicular flanges 6 and 6 on the metallic frames, protect theinner sides of the flask from any ossible contact with the molten metal,an in addition to this, the flask is reinforced and strengthened to anextent which enables a lighter construction of the flask by the use ofwood of less thickness than is otherwise possible.

While I have shown and described two metallic angle iron frames in atwo-part flask, it will be understood that these angle iron frames maybe employed in connection with flasks having a greater number of parts,for example, a three-part flask or a four-part flask.

I claim:

1. In a molders flask, a two-part flask, metallic angle frames securedto the adjacent edges of said two-part flask and extending vertically onthe inner sides thereof, one of said metallic angle frames extendinginwardlyin a plane with the adjacent surfaces of the sand and providedwith a bead or rib lying in a plane at right angles to saidinwardly-extended portion and adapted to prevent the molten metal fromrunning out of the mold between the adjacent surfaces of the sand.

2. In a molders flask, a two-part flask,

metallic angle frames secured to the adjacent edges of the two parts ofsaid flask, one of said metallic frames having an inwardlyextendedportion lying parallel with and between the adjacent surfaces of thesand, said inwardly extended portion being )rovided with a bead or ribextending at right angles therefrom and adapted to penetrate the portionof the sand lying in the lower portion of the mold, and the other ofsaid nietallic frame being provided with a verticallyextending flangeadapted to engage the flrstnamed metallic frame and to support the11pper portion of the flask.

3. ln a molders flask, the combination with a two-part flask, of ametallic angle frame secured to the upper section of the flask andembracing the inner vertical sides and the lower horizontal edges ofsaid upper flask portion, said frame having an inwardly extending angeprovided with a downwardly projected bead, a metallic frame secured tothe lower portion of the flask and having flanges extending at rightangles to embrace the inner vertical sides and the upper horizontaledges of said flask portions, said metallic frames having means thereonlying on the outside of the flask and adapted to secure the two parts ofthe flask together.

4. ln a molders flask, the combination with the parts of the flask, ofmetallic angle frames secured to the adjacent edges ofthe parts of theflask and embracing the inner sides of the parts of the flask adjacentto the edges, one of said angle frames having an inwardly-extendedportion which lies between the sand in the upper and lower portions ofthe flask, said inwardly-extended portion being provided with a beadprojecting from its lower side and which is adapted to revent theout-run of metal, substantial y as specified.

In testimony whereof l affix my signature, in presence of two witnesses.

GEORGE H. KRAMER.

Witnesses:

MATTHEW SIEBLER, R. J. MCCARTY.

